Lubricating attachment for springs



D. L. LAWSON.

LUBRICATING ATTACHMENT FOR SPRINGS.

i APPLICATION FILED DEC.9,192I, 1,480,171.

Patentedsept. 26, 1922.

a IT A TTORIVEYS Patented hep-it, 2d, 1222,

an a a is (23d an DAVID L. LAWSOll', 0E OBEY,

CALIFORNIA.

LUBRICATING ATTACHMENT FOR SPRINGS.

Application filed December 9, 1921.

T0 aZZ whom it may concern Be it known that 1, DAVID L. LAWSON, acitizen of the United States, and a resident of Orby, in the county ofSanta Barbara and State of California, have invented certain new anduseful Improvements in Lubricatin Attachments for Springs, of which thefollowing is a specification.

This invention relates to a lubricating attachment for springs.

The invention has for its object to provide a lubricating device asabove characterized for supplying a lubricating oil between the leavesof an elliptic or semi-elliptic vehicle spring in a uniform manner,whereby undue pressure and friction between the springs may be obviated.

It is also an important object of the invention that the lubricatingattachment be adapted to closely regulate the amount of oil to besupplied to the springs being lubricated and at no time to supply anexcessive quantity of oil.

Other objects and objects relating to details of construction,combination and arrangement of parts will hereinafter appear in thedetailed description to follow.

The invention is illustrated by way of example in the accompanyingdrawings, in which Figure 1 is a perspective view of a fragmentaryportion of a leaf spring and illustrating the invention applied,

Figure 2 is a vertical sectional view of the r same taken adjacent oneside of the leaf spring Figure 3 is a transverse sectional view of thesame,

Figure 4 is detail sectional view showing a partial inner face of one ofthe wick or pad holders and a portion of the supplemental oil tube.

Referring to the drawings more particularly, indicates generally acasing which is U-shaped and its bridge portion 11 occurring a distanceabove the lower ends of its leg portions 12. The leg portions 12 of thetil-shaped casing, in each instance, are open at their inner sides andeach adapted to receive a Wiclr or pad 13, said pads being preferably offelt, and each pad extending through a suitable recess formed in thebridge portion 11 of the casing and having its lower end disposed belowthe bridge portion 11 as shown in Figure 3.

The legs 12 are spaced suiliciently that Serial No. 521,176.

they may be fitted upon a plurality of superposed leaf springs 15, asshown. The upper end of each leg portion 12 of the casing terminates inan upstanding flange 16 which is arcuate in shape, as shown, and saidflanges are provided with suitable openings through which a bolt 17 maybe extended, said bolt engaged by the spring fingers 21 for removablyholding the cap in its applied position.

Each spring finger is provided with an extension 21 to facilitate thelifting of the same. Also the lips 20 serve to catch any excess oilwhich may travel down the outer sides of the legs 12. The oil caught bythe lips 20 would of course find its way to the body of oil 19.

In one leg 12 of the casing there is positioned a tube 22 which extendsnear the bottom of the leg and its upper end communicates with an oilopening 22 formed in the leg. The oil opening may have a cover 23 whichwill tightly close the same to prevent dust or other foreign matterentering the same.

in attaching the lubricating device heretofore described, the cap 18 isfirst filled with oil and the wicks 13 are positioned, and the devicesecured to a spring by the means of the bolt 18, as shown. In operationthe oil from the cap 18 is fed by a capillary attraction to the leavesof the spring and allowed to enter therebetween. By this are rangernentof emitting the oil to the spring leaves, a close regulation of theamount of oil distributed is had, and as obviousthe quantity of oil fedwill be uniform and at no times excessive. Should it some time bedesired to saturate the wicks then oil may be injected through the oilopening 22'. This of course is only necessary when an excessive amountof oil is desired for lubricating the spring means. Ordinarily the oilcontained in the cap 18 of the casing 10 will be suflie cient. As isobvious the cap 18 is of suiticient to hold oil for lubricating thespring leaves for a long period without replenishing, and whenreplenishing the same may be easily and quickly accomplished.

I claim:

1. A leaf spring lubricating attachment, comprising a U-shaped memberadapted to be fitted upon a leaf spring construction, the leg portionsthereof being channeled shaped on inner side and extending below thebridge portion, a wick within each leg portion and extending through anopening in the bridge portion so that the lower ends of said wick maydepend below the bridge portion, and a removable lubricating pan fittedupon the extended portions of said legs.

2. A leaf spring lubricating attachment, comprising a Ushaped memberadapted to be fitted upon a leaf spring construction, the leg portionsthereof being channeled shaped on inner side and extending below thebridge portion, a wick within each leg portion and extending through anopening in the bridge portion so that the lower ends of said wick maydepend below the bridge portion, a pan receptacle telescoping theextended portions of said legs and detachable connecting means betweensaid pan and said legs.

3. A leaf spring lubricating attachment, comprising a U-shaped memberadapted to be fitted upon a leaf spring construction, the leg portionsthereof being channeled shaped on inner side and extending below thebridge portion, a wicl: within each leg portion and extending through anopening in. the bridge portion so that the lower ends of said wick maydepend below the bridge portion, a pan telescoping said legs, having anoutwardly curved lip formed about its upper edge and adapted to retain alubricating liquid, and means for detachably securing said pan to thelegs.

l. A leaf spring lubricating attachment, roanprfng U-shaped memberadapted to be fitted upon a leaf spring construction, the leg portionsthereof being channeled shaped on inner side and extending below thebridge portion, a wick within each leg portion so that the lower ends ofsaid wick may depend below the bridge portion, a pan telescoping theextended portions of said legs and having an outwardly curved lip formedabout its upper edge, a spring linger carried by each lip and adapted toengage each lip whereby to detachably hold said pan.

DAVID L. LAWSON.

